000201115 001__ 201115
000201115 005__ 20181203023556.0
000201115 022__ $$a0045-6535
000201115 02470 $$2ISI$$a000339601600065
000201115 0247_ $$2doi$$a10.1016/j.chemosphere.2014.04.083
000201115 037__ $$aARTICLE
000201115 245__ $$aTrace metals and persistent organic pollutants in sediments from river-reservoir systems in Democratic Republic of Congo (DRC): Spatial distribution and potential ecotoxicological effects
000201115 269__ $$a2014
000201115 260__ $$bElsevier$$c2014$$aOxford
000201115 300__ $$a8
000201115 336__ $$aJournal Articles
000201115 520__ $$aThis paper discusses the occurrence and spatial distribution of metals and persistent organic pollutants (POPs: including organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), Polybrominated diphenyl ethers (PBDEs), and polycyclic aromatic hydrocarbons (PAHs) in sediments from a river-reservoir system. Surface sediments were sampled from thirteen sites of the Congo River Basin and Lake Ma Vallee, both situated in the vicinity of the capital city Kinshasa (Congo Democratic Republic). Sediment qualities were evaluated using toxicity test based on exposing Ostracods to the sediment samples. The highest metal concentrations were observed in sediments subjected to anthropogenic influences, urban runoff and domestic and industrial wastewaters, discharge into the Congo River basin. Ostracods exposed to the sediments resulted in 100% mortality rates after 6 d of incubation, indicating the ultimate toxicity of these sediments as well as potential environmental risks. The POPs and PAHs levels in all sediment samples were low, with maximum concentration found in the sediments (area of pool Malebo): OCP value ranged from 0.02 to 2.50 with Sigma OCPs: 33 mu g kg(-1); PCB ranged from 0.07 to 0.99 with Total PCBs (Sigma 7 x 4.3): 15.31 mu g kg(-1); PAH value ranged from 0.12 to 9.39 with Sigma PAHs: 63.89 mu g kg(-1). Our results indicate that the deterioration of urban river-reservoir water quality result mainly from urban stormwater runoff, untreated industrial effluents which discharge into the river-reservoirs, human activities and uncontrolled urbanization. This study represents useful tools incorporated to evaluate sediment quality in river-reservoir systems which can be applied to similar aquatic environments. (C) 2014 Elsevier Ltd. All rights reserved.
000201115 6531_ $$aSediments
000201115 6531_ $$aToxic metals
000201115 6531_ $$aPCBs
000201115 6531_ $$aPAHs
000201115 6531_ $$aToxicity test
000201115 6531_ $$aCongo River basin
000201115 700__ $$uInst Super Tech Med Kinshasa, Sect Nutr Dietet, Kinshasa 11, RD Congo$$aMwanamoki, Paola M.
000201115 700__ $$uUniv Geneva, Forel Inst, Fac Sci, CH-1290 Versoix, Switzerland$$aDevarajan, Naresh
000201115 700__ $$uUniv Geneva, Forel Inst, Fac Sci, CH-1290 Versoix, Switzerland$$aThevenon, Florian
000201115 700__ $$uUniv Geneva, Forel Inst, Fac Sci, CH-1290 Versoix, Switzerland$$aBirane, Niane
000201115 700__ $$0240229$$g104872$$aDe Alencastro, Luiz Felippe
000201115 700__ $$0241380$$g105298$$uEcole Polytech Fed Lausanne, Cent Environm Lab GR CEL, CH-1015 Lausanne, Switzerland$$aGrandjean, Dominique
000201115 700__ $$uUniv Kinshasa, Fac Sci, Dept Chem, Kinshasa 11, Zaire$$aMpiana, Pius T.
000201115 700__ $$uJaml Mohamed Coll, Postgrad & Res Dept Zool, Tiruchchirappalli 620020, Tamil Nadu, India$$aPrabakar, Kandasamy
000201115 700__ $$aMubedi, Josue I.
000201115 700__ $$uUniv Kinshasa, Fac Sci, Dept Chem, Kinshasa 11, Zaire$$aKabele, Christophe G.
000201115 700__ $$uUniv Geneva, Forel Inst, Fac Sci, CH-1290 Versoix, Switzerland$$aWildi, Walter
000201115 700__ $$aPote, John$$uUniv Geneva, Forel Inst, Fac Sci, CH-1290 Versoix, Switzerland
000201115 773__ $$j111$$tChemosphere$$q485-492
000201115 909C0 $$xU11838$$0252083$$pGR-CEL
000201115 909CO $$particle$$pENAC$$ooai:infoscience.tind.io:201115
000201115 917Z8 $$x104872
000201115 937__ $$aEPFL-ARTICLE-201115
000201115 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000201115 980__ $$aARTICLE